>>1020715
When you say "painting light" I'm assuming you mean vertex color baking, because doing full lightmaps was a bit of a waste on the PS2 generally.

Anyway read this book by Luke Ahearn if you want a better idea of what to do and WHY those things were done. There's alot of techniques that aren't well expressed in most places, but this book does a great job. Make sure not to get the versions with different covers than this one though, they're for much newer workflows